Compression Ratio???
Registered User
Joined: Mar 2005
Posts: 360
From: Eagle River, Alaska
Registered User
Joined: Jan 2001
Posts: 657
From: Farmington Hills, MI
Yup. Just find a calculator you like using.
It's also important to understand fundamentally what a static comp. ratio is so that you know how stroke, gasket, piston relief, piston deck height and chamber cc changes affect the ratio.
CR is volume above the piston at BDC divided by volume above the piston at TDC - or a volume ratio.
The only thing I noticed in the the link to the one on this site is that it doesn't take into account gasket bore dia. separately. For a Felpro 1074, the gasket dia. is 4.060", so you cant assume that dimension is simply bore diameter.
I've been using this one lately:
http://www.csgnetwork.com/compcalc.html
-Scott.
It's also important to understand fundamentally what a static comp. ratio is so that you know how stroke, gasket, piston relief, piston deck height and chamber cc changes affect the ratio.
CR is volume above the piston at BDC divided by volume above the piston at TDC - or a volume ratio.
The only thing I noticed in the the link to the one on this site is that it doesn't take into account gasket bore dia. separately. For a Felpro 1074, the gasket dia. is 4.060", so you cant assume that dimension is simply bore diameter.
I've been using this one lately:
http://www.csgnetwork.com/compcalc.html
-Scott.
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